Thanks for that, Rain.
I think used the same basic reassembly procedure as you write about.
The disassembly, I basically stuck a tiny blade screwdriver under each clip, pried outwards, and then I could lift the race cover and the bobbin case straight out. Once I'd read over what TFSR (
http://www.tfsr.org/publications/tec...achine_manual/) said, I understood what the bottom side of the hook looked like, and how to get it out without the polka that Singer suggests in their manual.